Sylvania



V. V. lV'EENSCHOTEN. FLUID PRESSURE CONTROLLER.

APPucATloN FILED ^ue.15. 191e.

1,419,331. K Patenten@ 13, 1922.

UNITED STA'IZEMAIENT OFFICE.

VINCENT V. VEENSCHOTEN, OF ERIE, PENNSYLVANIA, ASSIG-NOR T0 NORTHERN EQUIPMENT COMPANY, OF ERIE, PENNSYLVANIA, A. CORPORATION OF PENN- SYLVANIA.

To .fd-Z ifi/7mm it' 77mg/ concer-7i.:

Pie it known that l, VrnonN'r V. VEEN- sorfriert, a citien of the United States. residing` at Erie, in the county et Erie and `State oit Pennsylvania, have invented certain new and useful improvements in Fluid- Pressure Controllers, ot which the following; is a specification.

This invention relates to devices adapted to be operated by the pressure ot lluids and particularly by the pressure of one fluid with relation to the pressure of some other fluid so that the operation depends upon the difference oi pressure between the two fluids. Although the device may be applied to many uses, the particular use which. I have illustrated and described herein is a pump governor adapted to maintain a substantially constant excess pressure oit the water discharged b v the pump with relation to the steam pressure which operates the pump. This torni of governor is called a constant excess pressure governor.

On the accompanyingdrawings Fig. 1 is an elevation, more or less diagrammatic, oi. a boiler system including a feed-water pump and governor therefor which embody the features of my invention. Fig. 2 is a central sectional view oi' the governor and ot the steam valve of the pump which is controlled thereby. Fins. 3 and 4, are other views ot the 2governor and the valve.

As is well understood, a constant excess pressure pump governor controls the speed of the pump by controlling the steam valve of the pump engine, the governor itself beinn operated by the relative pressures of the steam and ot the water discharged by the pump. Steam. generated in the boiler 5 passes through the pipe 6 to the valve 7 and thence to the engine 8. The pump 9, operated by the engine, pumps water through the pipe 10 to the boiler. The governor 11. which l have invented, comprises a steam c iamber l2 enclosed by suitable elastic cylinder 13. The cylinderr` in this instance, comprises a cylindrical rubber surroimded by a coiled spring 14.. The lower end of' the cylinder' is closed. andv the upper end is clamped between the disk 15 and the plate 16 by means oil the tube 17 which. is fixed to the disk. The lower end of the cylinder is supported by a disk 18 which also supports the coil 14, the lower end. of the coil being fixed to said disk 18 and the upper end be- FLUID-PRESSURE CONTROLLER.

Specification of Letters Patent. Patnted June 13, 1922. Application inea August 15, i913. i

Serial N0. 249,976.

ing' fixed to the casing. The tube 17 is operatively connected to the discharge pipe 10 oi the pump by means ot a pipe 19 so that the pressure of the feed water is effective on the interior of the cylinder 13. This elastic cylinderis enclosed in a chamber 20 of the casing 2l., and this chamber is operatively7 connected with the steam pipe 6 by means of a pipe E22, so that the elastic cylinder has the steam pressure effective on its exterior, thus opposing;` the tendency of the water pressure within to expandL the cylinder. The coil '1.4i prevents expansion oi' the cylinder transversely but allows longitudinal expansion. so that as the pressure on the inside of the cylinder increases, in excess of the pressure on the outside, the disk 18, which is 'free to move, will be 'forced further away rom the disk 15.

The governor 11 is operatively connected with the steam valve 7 of the engine in any suitable manner. I prefer the following,` arrangement. A spindle 25 is journaled in the casing- 21 of.' the controller and the casmar 26 which is fixed to the casing` of the valve. One end of the spindle is connected to the disk 1S by means of an arm 27 and a rod 28, which are pivoted together. The other end ot the spindle is connected to the valve plunger 29 ot the valve 7 by means of the arm 30 and the stem. As the arms are both fixed to the spindle, and movement oit' the disk 18 will cause a rotating,r movement of the spindle, and this, in turn will cause a longitudinal movement of the plunger. An arm 35, also fixedY to the spindle, supports a weight 36 and the weight tends to rotate the spindle so as to force the disk. 1S upward aga-inst the pressure inside of the cylinder 18, thus assisting' thc steam pressure outside of the cylinder in opposing' the water pressure.

In practice, in normal operation, the pressure oi the water in pipe 10 tends to torce the disk 18 downwardly and thus to close the valve 7 aud shut down the pump; while the steam pressure, together with the weight 36. tend to Aopen the valve. Thus, as usual with excess pressure governors,` there is maintained a substantially uniform excess pressure of the water with reference to the steam pressure, depending upon the ei'i'ect of the weight 36 on the system. The weight may be shifted along the arm 35, so as to vary the magnitude of its effect.

l Claim as my invention:

1'. A pressure governor Comprising a ing, a longitudinally elastic Container enclosed in said with one of its ends fixed to said casing, means for passing a Afluid Linder pressure into said container, means for passing` a fluid under pressure into said casinlgi,` operati-ng means fixed to the iiree end of saidV Container and a Coil spring' encircling said container and fixed to said operating means.

2. A pressure governor comprising` a ease ing, a longitudinally yielding` Container enclosed in said easing,` with one of its ends liXed to said casing, means for passing into said container a fluid the pressure of Which is to be governed, means 'tor passing` another :Huid under pressure into said easing surrounding said 'eont-ainer, operating means positioned against the free end of said container, and a coiled spring enclosing said container, the end ot said spring adjacent the lixed end of said container being fixed to said fasing, and the other end of said spring being fixed to said operating means.

3. A controller Comprising a easing, a yielding Cylinder fixed. by one end Within said casing, operating-3,` means positioned. against the free end of said cylinder, a spring` oeil enclosing said cylinder and tending to prevent longitudinal extension thereof, means for passing` a fluid under pressure into said Cylinder Whereb57 a fluid tending to elongate said cylinder' may be passed therein, means for passingl a liuid under pressure into" saideasing whereby a fluid tending` to shorten said Cylinder may be passed. into said casing, and other adjustable means arranged so as to tend to Vary the length of said Cylinder.

.ln testimony whereof, ,l hereunto set my band.

VINCENT V. VEEN SCHOTEN. Witnesses:

VILLIAM E. Hin'r, JOHANNA SPANGGAARD. 

